Island



G. D. ROGERS) Device foi Pointing Wire.

Patented Aug. 3, 1 880 Puma. I

\lllllllll INVENTOHI UNITED STATES PATENT OFFICE.

CHARLES D. ROGERS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE AMERICAN SCREW COMPANY, OF SAME PLACE.

DEVICE FOR POINTING WIRE.

SPECIFICATION forming part of Letters Patent No. 230,718, dated August 3, 1880.

Application filed April 29, 1878.

To all whom it may concern:

Be it known that I, CHARLES D. RoeEEs, of the city and county of Providence, and State of Rhode Island, have invented an Improved Device for Pointing Wire Previous to the Drawing of the Same, the said device to be attached to a wire-drawing machine or used separately therefrom, as may be desired, the same being fully described in the following to specification and illustrated in the accompanying drawings, in which- Figure] represents a top view or plan of my device attached to awire-drawing machine, certain parts being cut away the better to 1 show construction Fig. 2, an elevation of the same, and Fig; 3 a view of the face of one of the dies and the segmental gear to which it is attached.

The operation of wire-drawin g by means of a draw-plate and other proper mechanismsuch, for instance, as that described in Letters Patent of the United States granted to me February 27, 187 7-is too well known to need particular description. It will therefore only be necessary, for an understanding of my device, that certain features of the operation be mentioned.

The wire, as is well known, is received from the rolling mill in coils, and previous to being drawn it is necessary to reduce the diameter of an end of said wire in order that it may be easily inserted into and passed a desirable distance through the draw-plate. This operation of reducing the diameter of the end is -5 also necessary in all the succeeding stages of reducing the wire to the requisite sizes. Likewise, when from any cause the wire breaks during the process of drawing, the undrawn broken end has to be reduced in diameter for 40 the purposes above specified.

Now, heretofore the operation of reducing an end of a coil of wire as it comes from the mill has been performed by more or less cumbersome machinery, which has been entirely distinct and separate from the drawing-machine, and in the succeeding operations of drawing the reduction of the diameter of the ends has been performed entirely by hand with a common vise and file, necessitating consid- 5o erable comparative expense, not only for the --quired length of time occupied by the workman in filing the rewire to the proper size, but by the stoppage of the machinery during such labor.

It has also long been a shop custom to diagonally clip with hand-shears for pointing the end of wire, and shears for such use have been heretofore applied to wire-drawing machines. The operations of filing and shearing result in more or less waste of wire, and the wire-point 6o afforded thereby is to that extent weakened and unfitted for withstanding the gripe and strain of the clamp by which the initial drawing is performed.

The object of my invention is to furnish a simple and effective device which may be attached to and worked by and in connection with a wire-drawin g machine, its location with relation to the same being such as not to interfere with the proper working of said ma- 7o chine, and at the same time to be convenient of access to the workman. Also, to so arrange certain of its parts that the end of any usual size of wire being worked may be compressed, and thereby properly and desirably reduced in diameter by one and the same device, as will hereinafter appear. An end of wire reduced is diameter by compression is much stronger than one reduced by the removal of metal, and much less waste is incurred.

Having described the objects of my invention, I will now proceed to a'description of its construction, it being understood that the device is attached to the wire-drawing machine, although it may be used entirely distinct and 8 5 separate therefrom, as will also hereinafter appear.

, A represents a table or bench, to which the device is secured. B' is the coiling-drum of the wire-drawing machine, supplied with the clamp b, and C is the vertical shaft which gives revolution to the drum, the parts B, b,

and C being arranged in the manner described in the Letters Patent above mentioned, gra'fnted February 27, 1877. 5

D is a cam attached to the shaft C, to which a continual rotary motion is given, the said cam operating upon an arm, E, having upon its end, if desired, an anti-friction roller, the

said arm being attached to or forming a part of a segmental gear, F, pivoted to the casing G at f, and being held in contact with the cam D by the force of a spring, (1, (shown in dotted lines in Figs. land 2,) which is attached to a pin upon said arm or upon the gear F. Working in and in engagement with the segmental gear F is a fellow, F, the counterpart of the former, with the exception of the arm E, the said gear F being pivoted to the casing G at f.

Attached to and above the gears F F are plates H H, which carry a pair of segmentalfaced dies, K K, the said dies having studs upon their backs and being secured to the plates H H by nuts or in any preferable manner.

The faces of the dies K K are scored with any desirable number of slightly-tapering half-round grooves, as It k, &c., Fig. 3, the mouths of said grooves being enlarged for the purpose of allowing the wire to be passed easily through. These tapering grooves k k, &c., are of varying sizes, corresponding with the different sizes of wire to be drawn, so that no matter what size of wire within certain limits is being worked suitable grooves in the dies will be found to properly reduce the diameter of the end of said wire. Furthermore, when soft wire is being worked-that is, wire that will bear in one drawing a reduction of two sizes-it is only necessary to twice introduce into the device the wire to be reduced, and it will be properly fashioned to pass through the draw-plate the requisite distance to be seized by the clamp or griper, whose office is to draw through a suificient amount to reach and be attached to the coiling-drum, the said operation being well known.

In order to properly line the wire and guide the same to the proper pair of reducinggrooves, the casing G is furnished with a guide-plate, L, Fig, 2, having a series of apertures,l l, &c., graded in diameter to accommodate the different gages of wire, the face of the plate being, if desired, stamped opposite to the orifice of each aperture with the number of the wire the said aperture is intended to receive. The rear side of the casing G is also furnished with a stop-plate, (not shown in the drawing,) whose oflice is to govern the length of wire inserted.

Before describing the actual and full operation of my device it will perhaps be necessary to state that the shaft of the wiredrawing machine is in continual revolution, regardless of whether or not the coiling-drum is clutched to it. It will therefore be seen that, the cam D being attached to said shaft, motion will be constantly communicated to the dies unless some arrangement be made for temporarily disconnecting the said cam from the shaft or of preventing its action upon the arm E. An arrangement for this purpose may be so applied that the insertion of the wire will operate to connect the cam D to the shaft or bring the arm E into contact with said cam to actuate the dies, the use of such an arrangement being immaterial to the operation of the device.

Having described the construction of my device and explained its connection with certain parts of a wire-drawing machine, I will proceed to its operation, which is that technically known as back-rolling.

It being desired to reduce the diameter of 7,

the end of a coil of wire, a time is selected when the dies are at the farthest point of the path of their inward motion, the wire is inserted into and passed through the proper aperture in the guide-plate L, the length so inserted being governed by astop-plate attached to the casing. The cam D being in revolution actuates, through the arm E and segmental gears H H, the dies K K, which close upon the wire, reducing its diameter, and at the same time carrying it outward toward the attendant and freeing it from the device. The operation of reducing the diameter is thus simply and quickly completed, and the workman can now proceed to the drawing by passing the said wire through the draw-plate, pulling through a sufficient amount, attaching the same to the coiling-drum by means of the clamp b, clutching the said drum to the shaft, and the operation of drawing will go forward.

Although in the operation of my device I have described it as attached to a wire-drawin g machine, yet it can be used entirely distinct from said machine, it being only necessary to supply the device with a revolving shaft to which to attach the cam D.

It is to be understood that I do not limit myself to the precise construction hereinbefore described and shown, as the same may be varied-as, for instance, the segmental gears may each be furnished with a lever-arm and operated upon by a double-acting cam, and the said gears may be so fashioned as to carry the dies, and the plates H H be dispensed with.

I am well aware that my pointing-dies operate on the well-known principle of back-rolling, and that back-rolling rolls have been heretofore provided with guides and a stop-plate; but, so far as my knowledge extends, segmental gear-dies actuated by a cam and lever, as herein shown, were never used for that purpose prior to my present invention.

What I claim, and desire to secure by Letters Patent, is-

The combination, with the driving mechanism of a wire-drawing machine, of the segmental dies grooved for pointing Wire and geared together, the operating-cam, the lever, the guide-plate, and the stop-p1ate,substantially as described.

OHARLES D. ROGERS.

Witnesses:

HENRY J. SPooNER, W. H. THURSTON. 

